<template>
    <div>
        <!-- 面包屑导航区域 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
       </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
            <div id="main" style="width: 600px;height:400px;"></div>    
        </el-card>
    </div>
</template>

<script>
var echarts = require('echarts');
import _ from 'lodash';

export default {
    data (){
        return {
            options: {
                title: {
                    text: '用户来源'
                },
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                        type: 'cross',
                        label: {
                            backgroundColor: '#E9EEF3'
                        }
                    }
                },
                grid: {
                    left: '3%',
                    right: '4%',
                    bottom: '3%',
                    containLabel: true
                },
                xAxis: [
                    {
                        boundaryGap: false
                    }
                ],
                yAxis: [
                    {
                        type: 'value'
                    }
                ]
            }
        }
    },

    async mounted (){
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));
        // 绘制图表
        const {data:res} = await this.$http.get('reports/type/1');
        const result = _.merge (res.data, this.options)

        myChart.setOption (result);
    },

    methods: {}

}
</script>

<style lang="less" scoped>

</style>